The binding sites of Iron atom in the structure of Structure of Rat Neuronal Nitric Oxide Synthase Heme Domain in Complex With 6-(((3S,4S)-4-(2-(2,2-Difluoro-2-(Piperidin-2-Yl)Ethylamino) Ethoxy)Pyrrolidin-3-Yl)Methyl)-4-Methylpyridin-2-Amine (pdb code 3nlw). This binding sites where shown with 5.0 Angstroms radius around Iron atom. The 3nlw structure was solved by H.LI, S.L.DELKER, T.L.POULOS, with X-Ray Crystallography technique, brief refinement statistics is given in the table below: